Cerebral venous thrombosis on CT imaging

(A) Axial head CT image shows hyperdensity in superior sagittal sinus (thick arrow) and adjacent superficial cortical vein (arrow) consistent with "cord" sign.

(B) Coronal head CT image shows dense superior sagittal sinus (thick arrow) consistent with "dense triangle" sign.

(C) Sagittal image on CT venography shows long-filling defect (arrows) in superior sagittal sinus.